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Finding the Fourth Proportional to 285,892.79, 428,297.90 and 190,836.35

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Solution

The fourth proportional to 285,892.79, 428,297.90 and 190,836.35 is: 285,893.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,892.79 : 428,297.90 = 190,836.35 : x
  2. Step 2: Convert to fraction form
    285,892.79/428,297.90 = 190,836.35/x
  3. Step 3: Cross multiply
    285,892.79x = 428,297.90 × 190,836.35
  4. Step 4: Simplify right side
    285,892.79x = 81,734,806,994.48
  5. Step 5: Solve for x
    x = 81,734,806,994.48/285,892.79
  6. Step 6: Final answer
    x = 285,893.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.